691879-61-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 691879-61-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,9,1,8,7 and 9 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 691879-61:
(8*6)+(7*9)+(6*1)+(5*8)+(4*7)+(3*9)+(2*6)+(1*1)=225
225 % 10 = 5
So 691879-61-5 is a valid CAS Registry Number.